Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 279 for “"Non-linearity"”.
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Cooperative Optical Non-linearity in a blockaded Rydberg Ensemble
… describes the observation of a novel optical non-linearity mediated by the dipole-dipole interactions in a cold gas of Rydberg atoms. Electromagnetically induced transparency (EIT) is used to map the strong dipolar interactions onto an optical transition, resulting in a cooperative effect …
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Model reference adaptive control systems using a dead zone non-linearity
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1985.
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Non-linearity as architectural narrative : a center for contemporary composition in three movements
… - one found in the writings of Faulkner - of non-linear narration. Through a series of studies I attempted to translate this literary construct into a language of spatial and experiential expression. In a dialogue with the literary, I added an architectural vocabulary by identifying existing …
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Long Term Measurement of Bandgap Voltage and System Level Integral Non-Linearity Drift
… level performance metrics, such as integral non-linearty, that may also drift in time but which we do not collect data for. Most long term drift measurement systems are only equipped to deal with analog voltage measurement and are unable to measure these other system level performance …
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An upgradeable agent-based model to explore non-linearity and intangibles in peacekeeping operations
Peacekeeping operations (PKO) have become a significant challenge to the German Armed Forces. For the development of tactics, techniques, procedures and equipment with combat operations, agent-based models have been developed, used and exploited for many years. Modeling and simulation of PKO, …
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A vertex based discretisation scheme applied to material non-linearity within a multi-physics finite volume framework
… Solid Mechanics(CSM) problems involving non-linear material behavior, specifically materials described by an elasto-visco-plastic constitutive relationship and a von-Mises yield criterion. The motivation is to contribute the non-linear CSM capability to an integrated FV framework for the …
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Non-linearity and Dispersion Effects in Tissue Impedance during Application of High Frequency Electroporation-Inducing Pulsed Electric Fields
… in 2005, irreversible electroporation (IRE), a non-thermal tumor ablation modality, was investigated for safety and efficacy in clinical applications concerning different organs. IRE utilizes high voltage (~3kV), short duration (~100us) pulses to create transient nanoscale defects in the plasma …
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A study of magnetic non-linearity and finite length effects in solid iron subjected to a travelling MMF wave
… and analytic study of the effects of magnetic non-linearity and finite length on the loss and field distribution in solid iron due to a travelling mmf wave. In the first half of the thesis, a two-dimensional solution is developed which accounts for the effects of both magnetic non-linearity and …
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Analysis of RF Front-End Non-linearity on Symbol Error Rate in the Presence of M-PSK Blocking Signals
Radio frequency (RF) receivers are inherently non-linear due to non-linear components contained within the RF front-end such as the low noise amplifier (LNA) and mixer. When receivers operate in the non-linear region, this will affect the system performance due to intermodulation products, and …
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Modelling non-linearity in 3D shapes: A comparative study of Gaussian process morphable models and variational autoencoders for 3D shape data
The presence of non-linear shape variation in 3D data is known to influence the reliability of linear statistical shape models (SSM). This problem is regularly acknowledged, but disregarded, as it is assumed that linear models are able to adequately approximate such non-linearities. Model …
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Each tale chases another. Metaphorical representations, non-linearity and openness of narrative structure in Italian opera from post-WWII to It makes no difference
… of socio-political conditions, the non-linearity of the dramaturgy, and openness to a plurality of interpretations. My composition It makes no difference contributes both as a new musico-theatrical work and an outcome of the discussion presented in the thesis. The main text is …
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Análise não-linear de estruturas reticuladas espaciais de concreto armado
Present an automatic program for non-linear analysis of spacial frames of reinforced concrete, including verification of structures under definite loading and research on its load-bearing capacity for a given disposition of loads. On its development are considered both the non-linearity of the …
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Minimum error tool path generation method and an interpolator design technique for ultra-precision multi-axis CNC machining
… the actual machining motion trajectory is a non-linear curve. The non-linear curve segments deviate from the linearly interpolated straight line segments, resulting in non-linearity errors, which in turn cause obstacles to ensuring high precision machining. The problem in multi-axis CNC …
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Factors affecting the initial stiffness and stiffness degradation of cohesive soils
… initial stiffness and small strain (Ea<O.1%) non-linearity in undrained triaxial compression: consolidation stress level (0.5-12 ksc), overconsolidation ratio ( 1,2,4,8), pre-shear consolidation stress path (loading vs. unloading), pre-shear lateral stress ratio (Ko- I), rate of shear …
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Study of a 2 dimensional aggregation model with non-linear adaptations
… impacts on collective animal motion of adding non-linearity to the animals’ turning rate in a 2-dimensional model of aggregation. The model in question was proposed by Fetecau and implements a dependence on an individual’s relation to neighbours’ position and the direction in which they are …
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Circuits for time-domain signal processing
… and sequential switching is used to reduce DCDL non-linearity. Fabricated in 65nm CMOS process, the prototype DTC achieves 1.65ps peak integral non-linearity (INL) while consuming 10.13mW at 100MHz carrier frequency. The achieved range and resolution are 5.31ns and 330fs, respectively, while the …
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Modified Stochastic Sine-Gordon Equation
… &gamma > 0 is the parameter of the power of non-linearity, &delta &ge 0 is the magnitude of non-linearity, &alpha> 0 be the damping parameter, and &sigma the diffusion intensity, on one dimensional domain. We analyze the properties of the solution of the SPDE by the eigenfunctions approach …
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The use of thermoluminescent dosimeters for In-vivo dosimetry in a fast neutron therapy beam
… calibration factors were derived. The dose non-linearity was determined in peak 5 and peak 6 and dose non-linearity corrections were performed. The sensitivity of TLD-700 chips with depth and off-axis distance was determined. In-vivo dose measurements were performed on seven patients (9 …
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